Metal tank.



PATENTBD APR. 21, 1908.

E. B. NORQUIST. METAL TANK.

APPLIQATION FILED APR.17,1906.

THE "cams PETIRS co. wAsmmmzu, n. c.

EMANUEL E. NORQUIST, OF KANSAS CITY, MISSOURI.

METAL TANK.

Specification of Letters Patent.

Patented April. 21, 1908.

Application filed-April 1'7, 1906. Serial No. 312,085.

T 0 all whom it may concern:

Be it known that I, EMANUEL E. Non- QUIST, a citizen of the UnitedStates, residing at Kansas City, in the county of Jackson and State ofMissouri, have invented certain new and useful Improvements in MetalTanks, of which the following is a specification.

My invention relates to metal tanks and more especially to tanks of thatclass stiffened and reinforced at their upper edges or rims withmetallic tubes, and my object is to produce metallic tanks of thecharacter named possessing the required strength, rigidity anddurability, expeditiously and at a minimum expenditure for material.

A further object is to produce a tank which in its preferred formrequires but a single bending operation to secure the reinforcing tubereliably to the wall of the tank and impart to said wall and tube therequired configuration.

With these general objects in view and others as hereinafter appear theinvention consists in certain novel and peculiar features ofconstruction and organization as hereinafter described and claimed; andin order that it may be fully understood reference is to be had to theaccompanying drawing, in which Figure 1, is a sectional perspective viewof a portion of a tank wall and a reinforcing tube upon the same. Fig.2, is a cross scetion of the same. Fig. 3, is a plan view of a com letedtank with the reinforcing tube partly in section.

In the said drawing, 1 indicates a tank, 2 the wall thereof, said wallbeing originally in the form of a fiat plate or sheet of the length andwidth required for the completed tank. The wall of the tank near itsupper edge or margin is provided with a series of rivets or cross pins3, said series paralleling the upper edge or margin of the wall.

4 indicates a metal tube of the required proportions, provided for itsfull length with a longitudinal slot or opening 5, the diameter of thetube being somewhat greater than the distance between the upper edge ofthe wall and said series of rivets or pins, so that the tube can beslipped endwise upon the wall and bear the relation thereto and to saidrivets or cross ins shown most clearly in Figs. 1 and 2. Vhen thusarranged it will be ap arent that endwise movement is required to effectthe disengagement of the tube from the Wall.

The wall and tube are then bent by .means of bending rolls or in anyother suitable or preferred manner to circular or other form required.Ordinarily the tanks are either of circular form as shown in Fig. 3 orof oblong rectangular form with semicircular ends. In either event whenthe bending operation of the wall and tube is completed the oppositeends are brought together as shown in Fig. 3, and as will be noticed insaid figure, it is impossible to disconnect the tube from the wall.without subjecting the tank to a strain which it is never subjected toin practice, that .is to say, to a strain which will bend back theopposite sides of the tube or wall or draw the rivets from position orbreak them. The bottom of the tank can be secured in place in the usualor any preferred manner, it being immaterial in this connection how thesame is formed or secured.

In practice it is preferred to slip the tube upon the wall when both areperfectly straight though it is obvious that they could be properlysecured il initially curved in about the same degree. In fact if thewall is sullicienily llcxible it would be possible to slip the curvedtube upon and bond the wall at the same time.

From the above description it will be apparent that l have produced ametal tank possessing the features of advantage enumcratcd as desirablein the statement of the object of the invention, and I wish it to beunderstood that I do not desire to be limited to the exact constructionshown and dcscribcd, but that changes within the scope of the appendedclaim may be made in the form, proportion, detail construction, andarrangement of the parts without departing from the principle of(amstruction described and claimed.

Having thus described the invention. what I claim as new and desire tosecure by Letters-Patent, is z- A tank wall comprising a rim consistingof a slotted tube and a wall projecting into the tube through its slot,and cross pins I) se cured to said wall and. bridging said slot andbearing against the inner side of the tube contiguous to the slot.

In testimony whereof I aHix my signature, in the presence of twowitnesses.

EMANUEL E. N ()EQU 1ST.

Witnesses H. O. RODGERS, G. Y. Tnonrn.

